Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f001c5956ab636a…

MALICIOUS

PDF

74.7 KB Created: 2021-02-13 14:18:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: ea5dd26fc993ab9667271951bbd66cb4 SHA-1: 1ba9239a8be2f7632eca3bd8195d8d50498e91f6 SHA-256: 8f001c5956ab636a9b1f1ce80f5013bcf20eeba397c49a5cf781139fff8a7072
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://maypoin.ru/123?utm_term=identity+versus+role+confusion+essays PDF link annotation
    • https://cdn.sqhk.co/basinasedu/aBh9JB1/59514882081.pdfIn PDF document text
    • http://help-feedback-amzn3.xyz/cytosine_structure_chemistryeh6jb.pdfIn PDF document text
    • https://cdn.sqhk.co/sesijisova/iglheha/i_am_warrior_apparel.pdfIn PDF document text
    • https://semowonobepak.weebly.com/uploads/1/3/4/2/134235862/xevafikozidu.pdfIn PDF document text
    • https://cdn.sqhk.co/zadorari/ijWhjif/the_battle_cats_hack_2020_ios.pdfIn PDF document text
    • https://cdn.sqhk.co/kinibemazoz/Ciiicia/when_does_the_stock_market_freeze_trading.pdfIn PDF document text
    • https://mofibowego.weebly.com/uploads/1/3/1/4/131406437/e537c7.pdfIn PDF document text
    • https://cdn.sqhk.co/veletafi/jgaOmaH/4_pics_1_word_level_1210_answer.pdfIn PDF document text
    • https://cdn.sqhk.co/dovawowo/RHigRgf/godzilla_defense_force_mod_apk_2._3._3.pdfIn PDF document text
    • https://cdn.sqhk.co/gafisasiwu/Xjarhja/45077531717.pdfIn PDF document text
    • http://ccckkkkk.space/127674863401m6o1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494677/normal_5ffd1f5d6df3a.pdfIn PDF document text
    • https://redulexaxoxega.weebly.com/uploads/1/3/0/8/130874010/04f2b521ce1533.pdfIn PDF document text
    • https://cdn.sqhk.co/zenekukera/ijiduRq/endless_frontier_online_idle_rpg_games.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vunizi/ikea_platform_beds_queen.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e885.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE885 5112 bytes
SHA-256: 22ef994e150940c2aa3916480d8dfc824c088a9a7f03757403f0fbb7c1304285
font_01_sfnt_off0000fa0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA0C 10476 bytes
SHA-256: c5c4ef19a3dd4d0a1532bedbd97cc24aa48060fd3b307280e837f745f1f9cbb3